답안 #684377

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
684377	2023-01-21T05:07:46 Z	handlename	Mobile (BOI12_mobile)	C++17	100 / 100	795 ms	31740 KB

mobile

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define float long double
const int MOD=1e9+7;
//const int MOD=998244353;
const int sqn=450;
const long double eps=1e-6;
long double n,l,x[1000002],y[1000002];
void runtc(){
	cin>>n>>l;
	for (int i=1;i<=n;i++){
		cin>>x[i]>>y[i];
	}
	long double mini=0,maxi=2e9;
	while (mini+eps<maxi){
		long double mid=(mini+maxi)/2;
		long double cur=0;
		for (int i=1;i<=n;i++){
			if (mid*mid<y[i]*y[i]) continue;
			long double lol=sqrt(mid*mid-y[i]*y[i]);
			if (x[i]-lol<=cur) cur=max(cur,x[i]+lol);
		}
		if (cur>=l) maxi=mid;
		else mini=mid;
	}
	cout<<fixed<<setprecision(4);
	cout<<maxi;
}
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //freopen("moocast.in","r",stdin);
    //freopen("moocast.out","w",stdout);
    //freopen("input1.in","r",stdin);
    //freopen("output1.out","w",stdout);
    //freopen("perfectly_balanced_chapter_1_input.txt","r",stdin);
    //freopen("hackercup_output.txt","w",stdout);
    int tc;
    //cin>>tc;
    tc=1;
    for (int i=1;i<=tc;i++){
        //cout<<"Case #"<<i<<": ";
        runtc();
    }
}

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	340 KB	Output is correct
2	Correct	340 KB	Output is correct
3	Correct	340 KB	Output is correct
4	Correct	340 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	340 KB	Output is correct
2	Correct	340 KB	Output is correct
3	Correct	340 KB	Output is correct
4	Correct	340 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	2 ms	340 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	468 KB	Output is correct
2	Correct	5 ms	496 KB	Output is correct
3	Correct	4 ms	468 KB	Output is correct
4	Correct	4 ms	468 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	468 KB	Output is correct
2	Correct	5 ms	468 KB	Output is correct
3	Correct	3 ms	468 KB	Output is correct
4	Correct	4 ms	504 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	468 KB	Output is correct
2	Correct	6 ms	508 KB	Output is correct
3	Correct	3 ms	468 KB	Output is correct
4	Correct	4 ms	468 KB	Output is correct
5	Correct	3 ms	468 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	58 ms	2592 KB	Output is correct
2	Correct	59 ms	2680 KB	Output is correct
3	Correct	39 ms	1928 KB	Output is correct
4	Correct	50 ms	2692 KB	Output is correct
5	Correct	28 ms	1892 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	45 ms	2772 KB	Output is correct
2	Correct	46 ms	2472 KB	Output is correct
3	Correct	51 ms	2876 KB	Output is correct
4	Correct	52 ms	2808 KB	Output is correct
5	Correct	58 ms	3020 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	61 ms	3080 KB	Output is correct
2	Correct	64 ms	2904 KB	Output is correct
3	Correct	55 ms	2984 KB	Output is correct
4	Correct	68 ms	3324 KB	Output is correct
5	Correct	52 ms	3116 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	74 ms	3392 KB	Output is correct
2	Correct	78 ms	3352 KB	Output is correct
3	Correct	65 ms	3456 KB	Output is correct
4	Correct	69 ms	3404 KB	Output is correct
5	Correct	62 ms	3408 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	80 ms	3336 KB	Output is correct
2	Correct	77 ms	3416 KB	Output is correct
3	Correct	66 ms	3424 KB	Output is correct
4	Correct	71 ms	3456 KB	Output is correct
5	Correct	61 ms	3460 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	343 ms	15984 KB	Output is correct
2	Correct	396 ms	16036 KB	Output is correct
3	Correct	371 ms	15948 KB	Output is correct
4	Correct	346 ms	15896 KB	Output is correct
5	Correct	318 ms	15980 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	389 ms	15968 KB	Output is correct
2	Correct	422 ms	15948 KB	Output is correct
3	Correct	329 ms	15932 KB	Output is correct
4	Correct	336 ms	15896 KB	Output is correct
5	Correct	326 ms	15940 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	417 ms	19232 KB	Output is correct
2	Correct	454 ms	19188 KB	Output is correct
3	Correct	455 ms	19020 KB	Output is correct
4	Correct	422 ms	19060 KB	Output is correct
5	Correct	378 ms	19084 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	455 ms	19032 KB	Output is correct
2	Correct	501 ms	19168 KB	Output is correct
3	Correct	388 ms	19124 KB	Output is correct
4	Correct	424 ms	19248 KB	Output is correct
5	Correct	383 ms	19124 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	483 ms	22220 KB	Output is correct
2	Correct	527 ms	22224 KB	Output is correct
3	Correct	519 ms	22196 KB	Output is correct
4	Correct	491 ms	22220 KB	Output is correct
5	Correct	455 ms	22132 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	550 ms	22132 KB	Output is correct
2	Correct	572 ms	22296 KB	Output is correct
3	Correct	461 ms	22248 KB	Output is correct
4	Correct	520 ms	22256 KB	Output is correct
5	Correct	447 ms	22220 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	553 ms	25496 KB	Output is correct
2	Correct	615 ms	25420 KB	Output is correct
3	Correct	590 ms	25416 KB	Output is correct
4	Correct	561 ms	25364 KB	Output is correct
5	Correct	512 ms	25420 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	608 ms	25440 KB	Output is correct
2	Correct	643 ms	25292 KB	Output is correct
3	Correct	529 ms	25532 KB	Output is correct
4	Correct	559 ms	25280 KB	Output is correct
5	Correct	512 ms	25296 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	690 ms	31724 KB	Output is correct
2	Correct	755 ms	31592 KB	Output is correct
3	Correct	749 ms	31740 KB	Output is correct
4	Correct	701 ms	31692 KB	Output is correct
5	Correct	636 ms	31624 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	748 ms	31620 KB	Output is correct
2	Correct	795 ms	31672 KB	Output is correct
3	Correct	670 ms	31692 KB	Output is correct
4	Correct	716 ms	31596 KB	Output is correct
5	Correct	680 ms	31620 KB	Output is correct

답안 #684377

Compilation message